Errors pf Except in SQL

The following Query will display the list of common errors that we encounter while writing the SQL server except query. For this, We are going to use two tables (Employee, and Employ) present in our [SQL Tutorial] Database.

From the below screenshot you can observe that [Employee] table have 7 columns and 14 rows.

Let us see what will happen when we perform except operation on an unequal length of columns.

From the above screenshot you can observe that it is returning 7 records because, except 2, 7, 9, 11 to 14 records, remaining ten records in Employee are also present in Employ table. And our Except operator select only distinct records from Employee.